Pathetic services rendered

Since the strike this year, we battle with network signal. Between myself and my mom we have 3 contracts with mtn. We pay every month without fail for a service that doesnt function properly at most times, and then theres the times it doesnt function at all. now in terms of the legal system aswell as the comsumer creditors act, we are sticking to our side of the terms and conditions of the contract between us. How ever, MTN isnt providing the service that we are paying for, meaning that they are in breach. I also have an 8ta contract and never have signal issues with them. I recommend that people think twice about signing up with mtn and I want to know how mtn is planning to rectify this issue or else they must cancel the contracts and re-emburs us just as they would expect if we didnt pay them. Awaiting a responce. Seriously upset client who is loosing business due to pathetic service.